Coffee Joulies incorporate a phase change material to quickly cool your hot coffee to the "perfect" temperature, and then keep it there

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Article Summary

Unless you’re someone who drinks their coffee fast, you likely face a bit of a conundrum when it comes to temperature – either you start with it at the perfect temperature but end up with it getting too cold, or you end up with it cooling down to the perfect temperature by starting with it too hot. Two young entrepreneurs, however, have created a product that they claim quickly cools your hot coffee to the right temperature, but then holds it at that temperature twice as long as it would stay there otherwise. Their product is called Coffee Joulies.